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Microsoft has released a tool called Windows 10 Upgrade Assistant that allows all users of Windows 8.1, Windows 8 or even Windows 7 to switch to Windows 10 with a simple solution based on the graphical interface. This tool also allowed users to upgrade to Windows 10 or even an ISO for Windows 10 for an offline upgrade. Now, sometimes, when you try to update, an error can occur when stating that api-ms-win-core-libraryloader-l1-1-1.dll is missing on your computer.
This happens after downloading the operating system and initializing the installation. And this problem is mainly caused by Windows 7 systems.
The error message in the dialog box is :
The program cannot start because api-ms-win-core-core-libraryloader-l1-1-1.dll is missing on your computer. To solve this problem, try reinstalling the program.
Well, as we see, the information provided is not sufficient. This is because we only know that a particular file is missing, but the original location and other attributes are missing. So now we will see how to fix it permanently in Windows 7.
The file api-ms-win-core-core-libraryloader-l1-1-1.dll is not a file delivered with Windows 7 or is not intended for Windows 7. This error occurred mainly after the release of Windows 10 Fall Creators Update. However, Microsoft has released an update for Windows 10 Upgrade Wizard to fix this, but if you have an older version or if you still encounter this error, you can use this workaround to fix it and update to Windows 10.
How to correct the error
There is no need to download or install anything else here. The required files are already in your System32 folder in the Windows folder of the operating system partition.
You must first navigate to this location using File Explorer:
Now use the File Explorer search bar to find this file:
When you find it, select it and press CTRL+C or right click and select Copy to copy the file.
Navigate to the next location :
Now press CTRL+V or right-click and select Paste to paste the file to this location.
You will be prompted to replace an existing file. Yes, you must replace him. If an increase is required, also accept this request.
You must now restart the entire process as soon as you replace the file in the Windows10 Upgrade folder from the System32 folder.
Don’t worry, the files you downloaded previously are always cached in the disk partition. Therefore, you should install it directly instead of downloading the entire operating system again.
Believe it works for you!